The CAA Tactical RONI is a frame for Glock and similar pistols that adds a stock and some attachment rails. The in-game model is, contrary to the description, modelled after a CZ P-09 instead of a P-10 in a RONI frame. Like the real-life CZ-P9, the in-game RONI has a magazine capacity of 19. Unlike its real-life counterpart, it is fully automatic.
In-game the P10 RONI is functionally similar to the Mx4 Storm. They share the same weak damage model and high rate of fire. However, its smaller magazine size of 19+1 rounds means that the magazine empties even faster, making the gun better suited to be fired in bursts. The recoil is slightly lower than that of the Mx4 Storm. Overall, the P10 RONI is a good option for close-to-medium range combat with its low recoil and high rate of fire.
A full-size version of the P-10 with a 19-round magazine exists as the CZ P-10 F. However, like the compact version, it has a straight trigger different from the one seen on the in-game model.
The RONI carbine kit model that the P-09 has been added into is actually based on the RONI-G2, which is meant for Glock pistols. A more appropriate kit would be the RONI-CZ kit, which has an enlarged cutout in the left side. As a result, the G2 model is partially obscuring some of the base pistol's controls, including the slide release (which is probably why the operator opts for the charging handle instead).
The CZ P-09 is a lightweight version of the classical CZ-75 built with a polymer frame. As a result, this weapon is related to the C75 Auto machine pistol.